Coles has apologised after several of its supermarkets across Australia were forced to close because of a technical glitch. A number of stores on Sunday morning posted notices on their doors about the outage, including in Sydney, Melbourne and the Gold Coast, according to posts on social media. Coles confirmed some "minor IT problems" had affected some supermarkets, "which were out of our team members' control", but all were now open and trading. "We apologise for any inconvenience our customers experienced earlier this morning," Coles said in a statement. "All Coles supermarkets are open and trading." Australian Associated Press